glazier



(No Model.)

J. HfHOLLAND & P. F. GLAZIER.

TROLLEY.

Patented June 16, 1896.

UNITED STATES PATENT OFFICE.

JOHN H. HOLLAND AND PETER F. GLAZIER, OF INDIANAPOLIS, INDIANA, ASSIGNORS OF ONE-THIRD TO JOHN R. PIERSON, OF SAME PLACE.

TROLLEY.

SPECIFICATION forming part of Letters Patent No. 561,991, dated June 16, 1896.

Application filed August 23, 1895. Serial No. 560,279. (No model.)

To all whom it-may concern:

Be it known that we, JOHN H. HOLLAND and PETER F. GLAZIER, citizens of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Trolleys; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The objects of this invention are, first, to provide a durable and self-lubricating bushing for trolley-wheels that will prevent the great wear on the hub of the wheel and thereby extend the life of the wheel, and, second, to provide a swivel connection between the wheel and the trolley-pole, with roller-bearings between the meeting faces of the swivel, whereby the wheel may accommodate itself readily to the curves and switches and obviating the tendency to leave the wire and liability to damage the hangers and guy-wires supporting the trolley-wire.

This present invention, so far as it relates to the swivel construction, is an improvement on the construction shown in a former application for patent made by us, in which, in order to bring the axis of the swivel in a vertical position, it is necessary to make a bend in the trolley-pole.

IV e accomplish the objects of this invention by the mechanism illustrated in the accompanying drawings, in which Figure 1 is a view in side elevation of our improved trolley-wheel and swivel connection and shows the swivel-joint as broken away in part to illustrate the inside construction. Fig. 2 is a front view of same. Fig. 3 is a view in side elevation of our improved bushing removed fromthe wheel. an end view of same, showing the graphite plugs in dotted lines. Fig. 5 is a top or plan view of the lower section of the swivel-joint, showing the balls for the ball-bearin g in place.

Similar letters of reference refer to like parts throughout the several views of the drawings.

A represents the trolley-wheel, which may be of any suitable construction adapted to the purpose, and Bis the trolley-head in two Fig. 4 15 sections B and Biwhich are jointed together, so the upper section B will have horizontal rotary movement upon the horizontal face of the lower section B IVhen the trolley is in its normal position-thatis, in position to take the current off of the trolley-wire-the plane of separation between the two sections of the head 13 will be horizontal.

B is the axle or spindle about which the upper section will turn and will preferably be formed integral with the lower section of the head. It will be projected through an opening in the horizontal base of the upper section B and will be threaded to receive the nut b, whereby the parts of the joint will be held together. The balls Z2 will travel in a groove concentric with the axle B and this groove to receive the balls will be formed in removable bearingplates b and b in order that the track for the balls may be specially hardened and may be replaced when worn without having to discard the whole trolleyhead.

The standards C and O form the supports for the trolley-wheel, and being alined with the general direction of the trolley-pole will throw the axle of the wheel to the rear of the vertical axis of the swivel, thereby providing a very sensitive device that will be quick in adjusting itself in turning curves following switches.

WVe will now describe our method of mounting the trolley-wheel in the standards O O.

D is a metal axle connecting the two standards and projecting through to the outside of the two standards, and E is a bushing of peculiar construction, such as will be hereinafter fully described, which surrounds the axle D and will preferably be projected through the standards 0 and O. The bushing and axle will be secured by means of the pins (1, as clearly shown in the drawings. The bore of the trolley-wheel will be large enough to receive the bushing and axle and will be mounted thereon.

The body portion of the bushing E will be constructed of some non-conducting material, preferably of vulcanized fiber, and in order to reduce the friction caused by the rapid rotation of the trolley-wheel thereon we will provide a lubricant in the shape of a se ries of graphite plugs E. These plugs will be inserted in a large number of holes which will be drilled in any desired pattern throughout the entire face of the bushing, and, being insulated by the surrounding material of the bushing, will be saved from the disintegration and change from electrical action which has been so annoying and heretofore unavoidable. As an additional aid in overcoming the friction between the wheel and the bushing we prefer to provide alternating surfaces of rawhide, which are shown at 1*. Vhile this rawhide surface is not necessary, it is found to be a desirable feature and provides a more satisfactory wearing-surface.

G are metal brushes consisting of metal plates formed something in the shape of washers, through which the axle and bushing will be projected and placed so the brush will bear against the hub of the wheel. The brushes will be riveted or bolted to the standards 0 and C and will act as springs to hold the wheel steadily in position. By this means the current from the wire will be transmitted through the wheel,thence through the brushes to the trolley-head, and then down the trolley'pole in the usual manner.

Having thus fully described our invention, what we claim as new, and wish to secure by Letters Patent of the United States, is

1. A bushing for trolley-wheels, the body of which is constructed from some material which is practically a noirconductor of elec tricity, and having a series of indentations at intervals of its outer surface filled with lubricating material and having alternating belts of rawhide throughout the surface of the bushing substantially as described and for the purposes specified.

2. A trolley-head in two sections divided horizontally in the manner as shown, and joined together by means of a vertical pin thereby forming a swivel-joint the vertical axis of which is to one side of the horizontal axis of the wheel, and having a horizontal row of ball-bearings concentric with the axis of the swivel, said ballbearings being interposed between the meeting faces of the twopart head, sufficiently remote from the pintle to prevent contact therewith.

3. A trolley-head in two sections divided horizonta-lly'and pivoted together so as to form a swivel construction and having ballbearings between the meeting faces of the sections and having removable bearin g-pl ates at contact with the balls both above and below the balls, substantially as set forth.

In testimony whereof we afiix our signatures in presence of two witnesses.

JOHN II. HOLLAND. PETER l3. lrLAZlER. Witnesses:

.Tosnrn A. 1\[n\"rUnN, F. W. Wonnnnn. 

